Answer:
Both use kinetic energy to produce electricity.
Answer:
B. A chemical change occurred which caused the liquid's physical properties to change.
Explanation:
The reduction of the temperature of the system meant that the reaction absorbed heat energy from it. This shows that a chemical reaction was in progress. New products were formed, and this is proved by the change in the color to blue.
Answer:
(NH4)2Cr2O7
Explanation:
Hope this somehow helped.
Answer:
D
Explanation:
It occurs when the outermost electrons are permanently transferred to another atom.
The fourth period contains 18 elements, beginning with potassium and ending with krypton. As a rule, period 4 elements fill their 4s shells first, then their 3d and 4p shells, in that order; however, there are exceptions, such as chromium.
Cr. I think